Collapsible tube



April- 28, 1925.

N. M. HOPKINS COLLAPSIBLE TUBE Filed'June 1.1, 1921 INVENTOR .ATTORNEY Patented Apr. 28, 1925.

NEVIL MONROE HOPKINS, OF. NEW YORK, N. Y.

coLLAPsiisiii TUBE.

Application filed June 11; 1921. Serial No. 476,746.

To, all whom it may concern:

Be it known that I, NEVIL MONROE Hor- KINS, a citizen of the United States, and a resident of New York city, New York and State of New York, have 1nvented certain new and useful Improvements in Collapsible Tubes, of which the following is a specification.

This invention relatesto collapsibletubes especially adapted to hold'tooth pastes and other compounds, and has for 1ts ob ect to providea' device of this character whlch Will be comparatively inexpensive to manufacture .and more eificient in use than those parts shown in Figure 1; and

Figure 3 is atopview and a sectional detail view of 'a modified form of tube closing structure.

I 10 represents an inner collapsible contain-f cr'of any suitable material, surrounded by,

an outer "collapsible container 11, and said containers are provided Withthe usual Open ends at their bottoms adapted for'folding as indicated at 12 and 13 respectively, all as will be readily understood.

The inner tube 10 is further provided with the' usual thickened neck portion 14 and the outer tube 11 is provided withthe similar neck portion 15.

The inner top member 14 is pierced with a number of holes 1616 and a hollow neck projecting therefrom screws into the mem- 'ber 15 through the agency of threads shown at 17 until the shoulders 18 are firmly in F contact; A. screw cap 19 internally threaded. at 20 is adapted to engage ,the threads 21,

and carries a-downwardly projecting member '22 which travels down with a close fit in the hollow neck of the'massive member 14 sharply closing the holes 16, 16,'and reaching a position as shown by the dottedline at 23. his downwardly projecting memin the county of the centrally located container.

.the cement might obstruct the orifice.

ber may be slightly tapered as well as the opening which receives it. It is therefore obvious that the cap not only closes the combined orifice 24 but would force back into the inner tube 10 as far -as the dotted line 23 any material which may remain in the neck of the mem* ber 14 resulting from squeezing the collapsiof the two concentric tubes ble tubes at or near the bottom folded portions 12 and -13. 25 may be an aqueous paste mixture of barium peroxide and precipitated chalk,'and 26 may be an aqueous mixture of a fruitacid and a suitable inert vehicle, stances may be forced out of the common orifice 24 reacting upon each other as they issue forth and also immediatelyafter having issued fortlnli'berating nascent hydrogen peroxide, as hereinafter.

With reference to the somewhat modified form of closure shown in Figure 3, the massive top members 26 and 27 of the outer and inner tubes respectively are adapted to screw together at the point 28 againstthe shoulders29.. The

separateorifices of egress 30 for the outside concentric 0011132111181, and the portion 27 is portion 26 is provided with 1 and it is evident that these sub- 70 will appear more fully provided with an independent orifice 31, for 35 In this said modified construction, the chemical reaction to be described below takes place on the out side of the tube and involves certain advan tages over the design which is adapted to unite the substances, while issuing from the passage 24,, for in. this said construction of Figure 3, no quantity of acted upon material is left within-a common illustrated in Iiigure 1,

orifice as is the case. with the said design of Figure l.

Furthermore, when cements and other plastic substances of different properties are employed, the modified design shown in Figure 3 serves best soon after the several ingredients contained inthe two tubes have been allowed to react upon each other. In the design shown in igure 1, on the other hand, such setting of screw cover shown in Figure 3 at 32 is provided with a somewhat shorter downwardly. PI'OJBCtlIlg lug 33 than is the lug 22 in Figure 1, and the said lug 33 is preferably tapered as shown. I

It will now be clear fromthe above disclosure that I have provided a two compart for those cements whicli set 0 The ment collapsible tube adapted to hold .a

tooth paste consisting of, say, barium peroxide,- mixed with precipitated chalk and water in one compartment, and another paste consisting of, say, tartaric acid, or other these two pastes can be kept stable and intact chemically for a given period of time,

or until they are caused to flow into contact by collapsing the tubes. Vhen this is done, a germicidal agent consisting of freshly liberated, or nascent hydrogen peroxide will be produced' mingled with the precipitatedchalk, an inert vehicle, furnishing a carrier for the said germicidal agent, and also a mechanical cleansing means, both of which features are recognized as valuable in a dental paste,

By inert vehicle, I'mean a paste forming substance which is not acted upon by theorganic or vfruit acid with which it is associated. -The hydrogen peroxide abovementionedjis formed, as is well known, from the barium peroxide present, due to the action of carbonic acid on the bariumv peroxide,

said carbonic acidresulting from the reac-v tion between the tartaric or fruit acid-prescut with the calcium carbonate or precipitated chalk carried by the paste in the pres ence of water.

Cal

It will further be clear that by placing an aqueous paste consisting essentially of BaO .in combination with CaCO in one compartment, and an aqueous paste of tartaric acid mixed with a suitable inert paste making vehicle in the other compartment,

the hydrogen peroxide resulting from the mixture of the two pastes is liberated within the massof precipitated chalk or other 1 inert vehicle, after the mixed pastes reach the tooth brush and also'afteuthe mixture is is in, its nascent or most active condition when it reaches the film'onthe teeth, and

applied to the teeth. 3 g Y It thus results that the hydrogen peroxide therefore a better cleansing action is had than it' is posslble to get with the prior pastes which do-not provide this said nascent peroxide; It further will be clear that the liberation of CO gas in the body of the paste while in contact with the teeth of necessity has in addition a greater or less mechanical act on in destroying the film, tartar, or other material which is-to be removed from the teeth.

It is obvious that those skilled inthewart may vary the details of construction ,of the tubes as well as the ingredients ofthe pastes employed, wit hout departing from the spirit of the invention, and therefore I do .not wish to be limited to the above disclosure except as may be required by the claims.

What I claim is:

1. A container comprising a plurality of collapsible tubes provided withintegral neck portions and located one within thefother,

4, A container comprising a plurality of,

concentrically disposed. collapsible tubes provided with a single outlet and a single closure, substantially as described.

5. A container comprising a plurality of concentrically disposed collapsible tubes provided with a single closure provided with -meansto enter one of said tubes, substantially as described.

6. A container comprising a plurality of collapsible tubes, associ ated with each other,

and provided with a single closure.

s aced collapsible tubes located one within.

7.. A container comprising a plurality of.

t e other provided with a communication between the inner tube and the space between the tubes and having a: single closure for both of-said tubes. I i

9. A container comprising a plurality of concentrically disposed spaced collapsible tubes'provided with a closure having a depending projection adapted to fitthe exit of one of sai v a 10. A'oontainer comprising two coll-apsi- (1 tubes.- 4

ble tubes one located within the other and havingneck portions provided with outlets adjacent each other, a single removablecap fitting over said neck portions and closing,

all of said outlets, 4 4

11. A container comprising a collapsible tube provided with a restricted neck, a second colla sible tube ,wi thin-the first mentioned tu e and also having a restricted. neck, the neck of the inner tube being'posiw t-ively secured to the neck of the first men tioned tube. 7

Signed at New York city in the'county of New York and State of New York June A. 11 1921.

. NEVIL MONROE HOPKINS; 

